單項(xiàng)選擇題In the Northern Hemisphere a wind is said to veer when the wind().

A.Changes direction clockwise,as from north to east,etc
B.Changes direction violently and erratically
C.Remains constant in direction and speed
D.Changes direction counterclockwise,as from south to east,etc

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1.單項(xiàng)選擇題In regions near the poles,the winds are generally described as().

A.Westerlies
B.Easterlies
C.Northerlies
D.Southerlies

2.單項(xiàng)選擇題If you observe the point of cloud convergence shifting to the right and the “bar”of the storm appears to move along the horizon().

A.The center of the storm will by-pass you
B.The storm will strike you on the starboard side
C.You are in the direct path of the storm and should take immediate steps to batten down loose gear
D.The storm is starting to break up

3.單項(xiàng)選擇題If you are caught in the left semicircle of a tropical storm,in the Southern Hemisphere,you should bring the wind().

A.On the starboard quarter,hold course and make as much way as possible
B.2 points on the port quarter,and make as much way as possible
C.On the port bow,and make as much way as possible
D.Dead ahead and heave to

5.單項(xiàng)選擇題Haze is not caused by().

A.forest fires
B.smoke from industrial areas
C.dust or sand storms
D.water droplets with the relative humidity more than 95%

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